3) Investments: Schedule of aging of mortgage loans (Details) - USD ($)		3 Months Ended	12 Months Ended
		Mar. 31, 2018	Dec. 31, 2017
Mortgage Loans during period		$ 208,303,794	$ 207,639,509
Mortgage Loans, Allowance for Loan Losses		(1,696,371)	(1,768,796)
Mortgage Loans, Unamortized deferred loan fees, net		(1,617,517)	(1,659,828)
Mortgage Loans, Net		204,989,906	204,210,885
Commercial Loan
Mortgage Loans during period		52,384,376	54,954,865
Mortgage Loans, Allowance for Loan Losses		(187,129)	(187,129)
Mortgage Loans, Unamortized deferred loan fees, net		(67,717)	(67,411)
Mortgage Loans, Net		52,129,530	54,700,325
Residential Mortgage
Mortgage Loans during period		101,665,364	102,527,111
Mortgage Loans, Allowance for Loan Losses		(1,474,022)	(1,546,447)
Mortgage Loans, Unamortized deferred loan fees, net		(1,125,974)	(1,164,130)
Mortgage Loans, Net		99,065,368	99,816,534
Residential Construction
Mortgage Loans during period		54,254,054	50,157,533
Mortgage Loans, Allowance for Loan Losses		(35,220)	(35,220)
Mortgage Loans, Unamortized deferred loan fees, net		(423,826)	(428,287)
Mortgage Loans, Net		53,795,008	49,694,026
Past due 30 to 59 days
Mortgage Loans during period		12,875,938	8,556,974
Past due 30 to 59 days | Commercial Loan
Mortgage Loans during period		5,211,276	1,943,495
Past due 30 to 59 days | Residential Mortgage
Mortgage Loans during period		7,223,352	6,613,479
Past due 30 to 59 days | Residential Construction
Mortgage Loans during period		441,310
Past due 60 to 89 days
Mortgage Loans during period		1,150,067	495,347
Past due 60 to 89 days | Residential Mortgage
Mortgage Loans during period		1,150,067	495,347
Past due 90 or more days
Mortgage Loans during period	[1]	2,800,231	4,053,167
Past due 90 or more days | Residential Mortgage
Mortgage Loans during period	[1]	2,800,231	3,591,333
Past due 90 or more days | Residential Construction
Mortgage Loans during period	[1]		461,834
In Foreclosure
Mortgage Loans during period	[1]	2,562,732	1,332,219
In Foreclosure | Residential Mortgage
Mortgage Loans during period	[1]	2,562,732	1,332,219
Total Past Due
Mortgage Loans during period		19,388,968	14,437,707
Total Past Due | Commercial Loan
Mortgage Loans during period		5,211,276	1,943,495
Total Past Due | Residential Mortgage
Mortgage Loans during period		13,736,382	12,032,378
Total Past Due | Residential Construction
Mortgage Loans during period		441,310	461,834
Current
Mortgage Loans during period		188,914,826	193,201,802
Current | Commercial Loan
Mortgage Loans during period		47,173,100	53,011,370
Current | Residential Mortgage
Mortgage Loans during period		87,928,982	90,494,733
Current | Residential Construction
Mortgage Loans during period		$ 53,812,744	$ 49,695,699

[1] There was not any interest income recognized on loans past due greater than 90 days or in foreclosure.